Since 1995, Veolia | Sanitary engineering has been a partner of tertiary institutions, health care institutions, managers and operators of multi-family buildings and industries. Particularly recognized for its expertise in the control of legionella risk, OFIS supports all projects aimed at improving health and environmental performance, for the comfort of users. [The quality of OFIS services is recognized by the COFRAC, CSTB and OPQIBI certification bodies](/en/get-know-us/certifications "Certifications").

Veolia | Sanitary Engineering is a subsidiary of Veolia | Sanitation & Maintenance France, the benchmark in environmental maintenance.



 

 

 



Veolia | Sanitary engineering has [offices in France and international relays](/en/get-know-us/our-sites "Our sites") to carry out missions on all continents.

> [Join us](/en/contact-us/carreers "Carreers").

[Read the editorial of Dorothée Fourny, CEO of Veolia | Sanitary engineering](/en/word-general-manager)

 



 

 

 



 

 

   ![Dorothée Fourny](/sites/g/files/dvc3506/files/styles/default/public/image/2025/04/Doroth%C3%A9e%20Fourny.jpg.webp?itok=hINgxGbQ)  Dorothée Fourny, CEO of Veolia | Sanitary Engineering

   





 

 

 



 

 

 

 





## 60 employees



 

 

 

 

 

 



 

## 6.8 million euros in revenues in 2019



 

 

 

 

 

 



 

## Over 10,000  
sites audited



 

 

 

 

 

 



 

## Over 1,400  
active clients



 

 

 

 

 

 



 

#### More than 2,500 interventions per year



 

 

 

 

 

 



 

#### More than 25 years  
experienced